Jaeger-LeCoultre: a Reverso wrist watch

Jaeger-LeCoultre: a Reverso wrist watch Duoface model 272154, manual wind movement, signed silvered dial with central machined section, Arabic numerals in black, small seconds at 6 also with Arabic numerals, inner seconds track, blued steel sword hands, the case turning over to reveal a second dial with sunken main circular dial to the top, Arabic 12, 3 and 9, with a smaller intersecting subsidiary date dial below flanked by NIGHT and DAY, the dial edge with machined engraving, the case with linear ridges to top and bottom, on both sides, marked 18k 750, on a signed JLC brown strap with signed JLC clasp marked 18K 750 to the interior and with monogram to the exterior (Case: 26mm wide excluding crown, 36mm high excluding lugs)